One of the most useful graphical displays of search results is Number of Hits in Book/1000 Words In Book. This lets you normalize the comparison of books so you can see the statistical significance of the search results as an indicator of the author's style.
Unfortunately, the option is not always there for all types of searches.
If I search the Lexham Syntactic Greek New Testament, I cannot graph the results using Number of Hits in Book/1000 Words In Book. I can get this with the Nestle-Aland 27 or 28 and UBS4 Greek New Testaments. There may be other resources that don't have this option. I really would like to see it for all Bibles.